Water treatment apparatus (10) comprising a buoyant body (11) adapted to float on a body of water, water treatment chamber means defined by a tank (12) supported by the buoyant body (11), at least portion of the tank (12) extending in use into the body of water, the tank (12) containing media carrying bacteria for treatment of water in the body of water, means (18) for pumping water from the body of water to the upper end of the tank (12) for flow through the tank (12) whereby said water is exposed to bacteria in the tank (12) and the lower end of the tank (12) being open for directing treated water back into the body of water.
Water purification or treatment apparatus (410) including a plurality of elongated water treatment chambers (433), each chamber (433) being normally oriented in a substantially vertical attitude, return pipes (434) interconnecting the chambers (433) whereby water to be treated flows in series through the respective chambers (433), gas outlets (443) for supplying gas such as ozone to the respective chambers (433) for bubbling upwardly through water flowing in the chambers (433) and creating a foam at the upper surface of water in the chamber (433) and means (440) for collecting the foam.
A modular water treatment unit (10) including a modular tank (11) having a plurality of joined tank parts (12, 13, 14) defining respective chambers arranged in series for treating water, each tank part having opposite side walls (15,16 and 18,19) with adjacent side walls of adjacent said tank parts being joined at their common upper ends (17,20) which define weirs over which water being treated in the unit (10) may flow from one tank part to the adjacent tank part for treatment in the respective chambers. The modular water treatment unit (10) may be associated with a floatable support for floating in or on a body of water for treating water therein.
A modular aquaculture system comprising a main chamber module (12) defining a main chamber (13) for containing fish, prawns or other fresh or salt water animals and a water treatment module (14) for treating water from the main chamber (13), the water treatment module (14) including a swirl chamber (15) and a drum filter (59) and biological treatment chamber (16), and means (53,36) for interconnecting the main chamber module (12) and the water treatment module (14). The aquaculture system also includes at least one further water treatment module (18) for treating water in the main chamber (13), the water treatment module (18) including an air/ozone treatment unit and UV treatment unit.
patents